Heat treated
A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 2925-00-149-0760
NSN 5925-00-834-0272
NSN 5965-01-464-0220
NSN 6135-01-026-9960
NSN 6105-00-421-9545
NSN 7035-00-830-1235
NSN 4140-01-417-2611
NSN 6650-01-221-1983
NSN 5835-01-250-2939
NSN 6240-01-293-0584
NSN 5905-00-790-4122
NSN 6620-01-474-4951